In June of last year, I had to prepare an offline Visual Studio installer for an isolated environment - the install package (with all available options) weighed in at over 50gb...
Right, exactly. Now, that can be broken down into smaller chunks based on what toolset you're intending to work with (C#, C++, web, SQL, etc), and the sizes for each toolset vary, but clearly these toolsets take up a lot of space.